Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
2300242severely pollutedgood311excellent
2200243severely pollutedgood311excellent
2100201severely pollutedgood291excellent
2000174heavily pollutedgood271excellent
1900161heavily pollutedgood281excellent
1800164heavily pollutedgood241excellent
1700136moderately pollutedgood231excellent
1600110moderately pollutedexcellent201excellent
1500114moderately pollutedexcellent201excellent
140098lightly pollutedexcellent181excellent
130086lightly pollutedexcellent191excellent
1200110moderately pollutedexcellent201excellent
110085lightly pollutedexcellent191excellent
1000113moderately pollutedexcellent191excellent
090077lightly pollutedexcellent171excellent
080089lightly pollutedexcellent171excellent
070094lightly pollutedexcellent171excellent
060084lightly pollutedexcellent151excellent
050088lightly pollutedexcellent161excellent
040087lightly pollutedexcellent181excellent
030083lightly pollutedexcellent171excellent
020079lightly pollutedexcellent181excellent
010086lightly pollutedexcellent191excellent
000095lightly pollutedexcellent201excellent